I bought this quite a while ago (I believe it's been years) and only got to use it recently. When used with a Retrode 2, it works as advertised. It correctly backups the games off N64 cartridges (as long as the contacts are clean) and allows the use of two N64 controllers on your computer. Nothing to complain about either function.

However, there is one thing this device lacks: savegame backup. I believe this is technically possible, but would require Retrode 2 firmware support which isn't there (yet?).

The physical construction seems to be solid, but I still take great care not to accidentally hit the plugin+game combination so as not to break the connector.

Cartridge reading works fine, but remember to switch the internal voltage switch inside the Retrode from 5v to 3.3v when using this adapter. (Mine didn't come with instructions and I couldn't get proper cart reads until looking up this issue.)